Oil-filter head



Jan. 13, 1931. c. L. MGCUEN OIL FILTER HEAD Filed March 28, 1928 w .m 1w W a 3 m m m w a m M a a a A 1 m 22 2 8 ,M 8 w M 7 K W w n, K g ,5 i

WMK 94 Patented Jan. 13, 1931 7 UNITED STATES PATENT oFFrcs CHARLES L.McCUEN,- or, LANSING, MICHIGAN, nssrenon 'ro GENERAL MOTORS con-PORATION, onnnrnorr; MICHIGAN; A CORPORATION or DELAWARE ably thecrankcase of an internal combustion IL-nuns HEAD Application filed March28, 1828. serial in. 285,259.

This invention relates to oil filters, and has particular reference tothe construction of a head or terminal portion of a filter to adapt itto be secured toa suitable support preferengine used on automotivevehicles. 7

This application is a continuation in part of my application S. N.238,411, filed Decemher 7, 1927. 7 7

Oil filters as at present used in connection with internal combustionengines of automotive-vehicles are usually secured to the dashboard orcowl pan, and necessitate a'considerable amount of piping to lead theoil from the pump and return thelubricant to the oil pan or thebearings.These oil pipes'are' in the way and the joints will aflord additionalpoints at which leakage may occur; Thereis also the danger of damagingor breaking of the oil pipes which will mean a serious interference withor a destruction of the filtering system. a I

It is the object of the present invention to eliminate the largerportion of the piping, and thereby remove the accompanying pos sibleleakage and the danger of breaking, by applying the head or terminalpart'of the oil filter directly to the crankcase of the internalcombustion engine. This arran ement will eliminate all the pipingleading to and from the dashboard, and will make a much simplerconstruction.

The object of the invention is accomplished a 40 ported in any suitableway, orif desired, may

be left free.

At either side of the securing bolt the filter head has the usual inletand outlet passages, which in the present invention are of a novel shapeand arrangement, and are provided "panying drawing, in which:

with bored nuts or plugs to allow for the attachment of the pipe fromthe pump or metering means, and a test valve, respectively. The inlet tothe filter is ositioned substantially centrally thereof, while theoutlet the test valve is applied.

The invention is disclosed on the accom- Figure 1 shows a side view of afilter constructed in'accordance with the invention with the headportion thereof shown in section. Figure 2 is a view showing the headapplied to the crankcase, the sectioned part being taken on the line 2'2of Figure 1.

Referring to the numbered parts on the drawing, the numeral 10 indicatestheQcrankcase of an automotive vehicle having a the head 18 is a gasket22, which will serve.

to make a tight connection when the head is secured to the crankcase.

Passing substantially centrally through the head 18 is an opening 24 forthe reception of a securing bolt 26, which has a head 27 and a threadedend 28 secured in a threaded opening 30 formed in the flat portion 14 ofthe crankcase. When the bolt'26 is screwed home, it will rigidly holdthe head and the filter 20 in position. v

\Vhile I have described the surface 16 of the head 18 as flat andadapted to be secured to the fiat portion of the crankcase, it isnevertheless, within the scope to suitably change the form of thesurface to permit it to conform to any suitable part of the crankcase.Likewise, the end 28 may extend inside the crankcase and a nut appliedthereto; or the bolt 26 may be reversed with the head 27 inside thecrankcase and the end 28 extending outward beyond the filter head 18,and a nut applied thereto.

Extending through the head 18 at either side of and at right angles tothe bolt opening 24 are inlet and outlet ports or passages 29 and 31respectively. The inlet port has a bored plug 32, the outer end of whichis internally threaded as at 34, to serve as an attaching means for thethreaded end 36 of a connection 38 of the piping 40, which leads fromthe oil pump (not shown) or any suitable metering means and conducts thecontaminated oil to the filter 20. The filter 20 has a stud portion 42to which the filter bag, 46 is secured, and this stud portion has athreaded extension 48 screwed into the opposite internally threadedportion 50 of the plug 32. This stud portion 42 passes through anopening in the stamping or casting 58 and serves as a means ofinterconnecting the filter bag with the head portion 18 and also holdsthe plug 32 in position. The inlet plug 32 is provided with arestriction 33 which serves to limit the flow of oil to the filter.

The outlet passage 31 is also provided with the bored plug 52 having itsinner end threaded as 'at 54 to enable it to be secured in a threadedopening 56 in a stamping or casting 58, which is positioned on theinside of the filter cover 60.

The plug 52 at substantially its mid portion has a reduced portion 59forming with the outlet 31 a channel or groove 60. This reduced portionis provided with a plurality of radiating apertures 62 which allow forthe egress of the oil from the bore 64 of the plug 52. From the groove60, the oil flows to the passage 66 (Fig. 2) and into the crankcasethrough the short tube 68 secured between the head 18 and an opening 70in the fiat sided portion 14 of the crankcase 10. If desired, the tube68 may be omitted.

Positioned in the end of the outlet plug 52 is a bleeder or test valve72 having a threaded portion 74 secured in the internally threadedportion 76 of the plug 52. Beyond the threaded portion 74, test valve 72has a reduced portion 78 terminating in a conical end 80, which rests ona conical seat 82 formed at a restricted portion 84 of the bore 64. Theplug 52 is further provided with a lateral outlet port 86 to allow forthe egress of oil when testing the filter.

The operation of the test valve is as follows. By unscrewing the valveor bleeder 72, the tapered end 80 will be lifted from its seat 82 and asthe valve is turned so as to allow the tapered end 82 to pass the out-From the construction as above described,

it will be apparent that the oil is led to the filter by a relativelyshort piece of pipe and is returned directly to the oil pan below thecrankcase without any intermediary piping, the crankcase being providedwith an opening which conforms to the passage 66 of the filter headto'allow the direct 'return'of the oil. It is therefore obvious thatthis construction will result in the elimination of the greater portionof the piping which is attendant with the installation of the usualfilter, and will also form a very convenient and novel means ofpositioning the filter. The filter is also placed where it is out of theway and the elimination of the oil lines removes obstructing piping nowin use.

The operation of the device is as follows: The oil will be delivered bythe, oil pump (not shown) or from a suitable metering arrangement intothe pipe 40, from where it will flow into the bore of the plug 32, andthen into the filtering material 46 where the impurities will be removedand the oil allowed to pass into the space which exists between thefiltering material and the filter can 20. From this space the oil willflow into the bore 64 of the plug 52 through the radial openings 62 andinto the groove 60, from where it will pass to the oil line 66 andthrough the short pipe line 68 through the opening 70 of the crankcaseand into the usual oil pan which is secured to the bottom of thecrankcase.

While the drawing and description show the bolt 26 as passingsubstantially centrally through the head and between the inlet andoutlet ports, it is nevertheless within the scope of the invention toreverse the positions of the bolt and either the inlet 29 or the outlet31, or to form an extension at either side of the head and pass thesecuring bolt through this extension.

If desired, the head instead of having the opening 24 may be left solidand a U-bolt passed around the head and the legs of the U secured insuitable holes in the crankcase. This construction will avoid boring thehead.

Suitable gaskets 88 are provided between the plugs 32 and 52 and thehead 18 to form a tight connection.

I claim:

1. In a filter head, two passages in said head, bored plugs secured insaid passages, an inlet pipe secured to one of said plugs, a test valvesecured in the second plug, and means to secure a filter to said headthrough the intermediary of said plugs.

